A psychic (from the Greek ψυχικόςpsychikos—"of the mind, mental") is a person who claims to have an ability to perceive information hidden from the normal senses through extrasensory perception (ESP), or who is said by others to have such abilities. The word "psychic" is also used to describe theatrical performers, such as stage magicians, who use techniques such as prestidigitation, cold reading, and hot reading to produce the appearance of such abilities. It can also denote an ability of the mind to influence the world physically using psychokinetic powers such as those formerly claimed by Uri Geller.

Critics attribute psychic powers to intentional trickery or to self-delusion.
A study attempted to repeat recently reported parapsychological experiments that appeared to support the existence of precognition. All attempts to repeat the results "failed to produce significant effects", and thus "do not support the existence of psychic ability."